GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Power Seat


Object Number: 1437973  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Lumbar Support
Fuse Block-Underhood Fuses; BATT1, Fuse Block-I/P Fuses; HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH, Fuse Block-I/P Circuit Breakers; DOOR CONTROLS, POWER SEATS
G302, G401 and G402
Figure 2:

Lumbar Support


Object Number: 1437978  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Heated Seat (KA1)
Power Seat
Fuse Block-Underhood Fuses; BATT1, Fuse Block-I/P Fuses; HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH, Fuse Block-I/P Circuit Breakers; DOOR CONTROLS, POWER SEATS
Fuse Block-Underhood Fuses; BATT1, Fuse Block-I/P Fuses; HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH, Fuse Block-I/P Circuit Breakers; DOOR CONTROLS, POWER SEATS
G302, G401 and G402
Figure 3:

Heated Seat (KA1)


Object Number: 1437979  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Lumbar Support
Fuse Block-Underhood Fuses; BATT1, Fuse Block-I/P Fuses; HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH, Fuse Block-I/P Circuit Breakers; DOOR CONTROLS, POWER SEATS
BCM Fuses; CLUSTER, DOOR LOCKS, INTERIOR LIGHTS, HVAC/PWR SND, ISRVM/HVAC, CRUISE SW
BCM Fuses; HTD SEAT/WIPER, GMLAN DEVICES, ECM, SDM/PSIR SW, Fuse Block-Underhood Fuses; TCM/TRANS, ABS/MRRTD
BCM Fuses; HTD SEAT/WIPER, GMLAN DEVICES, ECM, SDM/PSIR SW, Fuse Block-Underhood Fuses; TCM/TRANS, ABS/MRRTD
Blower Controls, DLC, Ground, MIL, Power and Subsystem References
DLC, HVAC Control Module, Radio and Switches
G202 1 of 2
G302, G401 and G402